You may try the ULNxxxx chips. Go to DigiKey.com and search for 'uln'. I
think they
have high gain (darlington) and already include the base resistor and
reverse voltage
diodes.

Tal



> > > I suggested a generic "jelly bean" NPN transistor because
> these are dirt
> > > cheap and quite effective for this purpose.  Just about any
> TO-92 small
> > > signal NPN should work fine for drive currents up to a few
> 100mA.  I use
> > > 2N4401 for this sort of purpose, but there are lots of alternatives.
> >
> > Could you give an example of an IC that has 3 or 4 of these
> devices on it?
>
> No, these are discrete parts.
>
> Also, please fix your email settings to not insert a REPLY-TO
> address.  That
> way the default reply address will be to the list.  I just sent you a
> response and noticed too late that it was going only to you.  That defeats
> the purpose of most people from whom you seek help.
>
>
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> Embed Inc, embedded system specialists in Littleton Massachusetts
> (978) 742-9014, http://www.embedinc.com
>
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